Die apparatus



May 14, 1929. w. J. KIRBY "2 DIE APPARATUS 2 sheets-sheet Filed Das. 14, 1927 Efi ' INVENTOR.

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Patented `May 14, 1929.

UNI-TED STATES i i maar WARREN J. meer, or rnerraarron, antenna.

.DIE APPARATUS.

Appleman inea tewater la, leaf. sean ,ua

This invention p relates to` a die` apparatus, andlias tor its object the construction olz a siinple and eliicient apparatus lor making; rock drill bits very sin'iilarto that shown` in niy United States PatentNo. 1,027,909, issued May 10, 1927. p

Another object ot the invention is the con-- struction ot anapparatus which will operate `noents oit parts as willbe hereinafter liully de-` scribed, illustrated in the accoinpanyin,al drawings, and more particularly pointed out in the appended claims.

ln the drawings:

Figure l is a View in side elevation et an apparatus constructed in accordance with the present invention, while p Figure 2 is an end view, in elevation, ot the drill-receiving` end.

Figure 3 is a sectional view taken on line 3MB, Figure Q, and looking in the direction et the arrows.

Figure l is a sectional view taken on line limit, F ipgure 3, and looking in the direction of the arrows.

Figure 5 is an end view, looking,l at the in ner end of the barrel and shaping pin.

Figure 6 is a longitudinal sectional View oit the cam roller and its stub shafts.

Figure 7 is a transverse sectional. view ol the bed plate and a shim.

Figure 8 is a top plan view of the shaping pin, while Figure 9 is an inner end view ol the saine.

Figure l0 is a bottom plan view ot the shaping pin, while Figure ll is an inner end View oit the saine.

Figure l2 is a view in side elevation oli the shaping pin, while Figure 13 is an inner end view ol the saine.

Referring to the drawings by numerals, l is 'the base plate upon which is placed the bed plate 2, which bed plate is slightly dished at 3 to better accommodate the hotdrill 4l. (dotted lines). Between the bed plate 2 and base plate l, I place one or more shiins 5, ttor the purpose hereinafter described. Suitably bolted to the bed plate l are two angles or uprights 6. A cani roller ll", provided witl stub sbatte 0 is journalled upon the uprights 6, andtoone otsaid stub shafts 8 'fastened an operating handle 0. rhe cani roller is lor the purpose oltightly lioldii f the `drill d within the apijiaratus while thel.

drill is being' torined with nay peculiarly constructed Cutting point. I

A easing l0 is secured upon the base plate l, and fastened or mounted within casing4 l0 barrel ll. Mounted in barrel ll is shaping; pinl. yAperlaires 13 are lorined in the lop oi the casinp; l0, whereby a suitable lubricant can be supplied to the interior olf the casing.

The shaping pin l2 is provided at its inner end with an inclined wall ll, and extending;v

outwardly lroin this end, at opposite sides et the shaping` pin is a pair ot wings l5. The top ol the shaping pin, at the inner-end, projects, leuning' a top wine; lli. liliitendural outwardly troni the inclined wall ll .is a ltshaped spur ll; this spur serves to keep open the `ini ner end. et the longitiulinally extending` water passage l@ (dotted lines), shown in Figures l and 3, and more particularly disclosed in my aforementioned United States Patent No. 1,627,909.

The heated drill, or drill bit 41 is run into the apparatus under cani roller 7, until the inner end ot the drill is engaged by the barrel and the shaping pin. lhen the cain roller is rotated to clamp tightly upon the drill, holding thedrill securely in the apparatus during the forming;- operation. Force is applied to the outer end ot the barrel ll and shaping pin l2, which causes .an ollset 19 (dotted lines), Figure 3, to be toi-ined upon the drill; the side wings l5 keep the drill trein spreaoling,` laterally, whereas the top wing 16 lreeps the drill trom spreading upwardly, hence as torce is applied to the barrel and.shaping` pin, the extreme inner end ot the drill is bent or forced downwardly, producing the curved oltset end, clearly shown in iny Patent No. 1,627,009. The thickness or size ol the o-set is controlled by the number olf shiins 5 that are placed under the bed plate 2; it only one is placed, as shown in the drawings, then the olli'- set will be less than it two or inore shirns are placed under the bed plate. Therefore, it will be seen that l have provided .means lor making different size ollsets, of my peculiar structure, upon drills or drill. bits tor the purpose oit drilling ditlerent size holes.

The bed plate is provided with a plurality ofivertical apertures 20, and each shim 5 is also provided with registering apertures 21, Figure 7. Suitable fastening means such as pins 22 extend up from the base plate through y ished product.

Theshaping pinV forces the cutting end of the bit to assume an elliptical shape; the wings of sai-d shaping` pin serve to keep the cutting end of the bit from being forced in the wrong direction, and the spur 17 prevents the water passage 18v from being closed at its inner end, while the barrel 11 and shaping pin 12 are being driven inwardly, within the stationary casing 10 during the formation of a nished drill or bit.

The shim, or shims 5y constitute detachable adjusting means for lifting the bed plate for controlling the size of the olf-sets on the lin- '.ish'ed cutting end ofthe drill or bit. `-While I Lhave described the preferred embodiment of my invention and illustrated the saine in the accompanying drawings, certain rminor changes or alterations may appear to rone skilled in the art to which this invention fairly fall within the scope of the appended claims.

What I claim is:

1. In an apparatus of the class described, the combination with a base plate, of a casing provided with a lubricant receiving aperture on said base plate, a barrel slidably mounted within said casing, a shaping pin ixedly niounted in said barrel, said shaping pin provided with an inclined wall at one end, a V-shaped spur extending from said inclined wall, said shaping pin provided at said end with side wings and a top wing extending be yond said inclined wall. and said base plateI provided with means yfor holding a drill in position to be operated upon by said barrel and shaping pin.

2. In an apparatus of the class described, the combination with a base plate, oi a casing on said base plate, a sliding barrel and shaping pin within said casing, said shaping pin provided at one end with an inclined wall within the end of the barrel, said shaping pin provided with an outwardly extending spur, and also with outwardly extending wings, said wings extending to the inner` end of said barrel, and means for holding a drill on said base plate in position to be operated upon by said barrel and shaping pin.

In testimony whereof I hereunto aHix my signature.

WARREN J. KIRBY. 

